Display screen or a portion thereof with icon



FIG. 1 is a front view of a display screen or a portion thereof withicon showing my new design; and,

FIG. 2 is a front view of a second embodiment thereof.

In the drawings, dot-dot-dash broken lines show the boundaries of theclaim. In FIG. 2 the evenly spaced dash-dash broken lines shows andisplay screen or portion thereof with icon that forms no part of theclaimed design.

CLAIM The ornamental design for a display screen or a portion thereofwith icon, as shown and described.